When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is 2.5 × 10⁻⁴ m s⁻¹. If the electron density in the wire is 8 × 10²⁸ m⁻³, the resistivity of the material is close to:

Current Electricity: JEE Main 2015 Physics question

JEE Main 2015 · Session, Shift 1 · Q6495

JEE Main 2015Session, Shift 1PhysicsMediumCurrent Electricity150× since 2002

When

5V

potential difference is applied across a wire of length

0.1

m,

the drift speed of electrons is

2.5 \times {10^{ - 4}}\,\,m{s^{ - 1}}.

If the electron density in the wire is

8 \times {10^{28}}\,\,{m^{ - 3}},

the resistivity of the material is close to :

JEE Main 2015 Current Electricity Question with Solution (Session Shift 1, Q6495) | JEE Arc